Does Appium support testing iOS 8 extensions? How?

Hello,

I’m new to Appium and just learning.

Questions:

Does Appium support testing iOS 8 extensions? How?

Can I use Appium to test interactions with other apps, such as in-app purchase, or accessing the home button to then switch to another app? How?

What are major Appium limitations today? Any workarounds?

How does Appium compare to Subliminal? Are they feature-wise, equivalent? Which one could be better than the other, and why?

Thanks,
Claudio

Appium is limited as far as WebDriver, Selendroid, UIAutomation, UIAutomator are limited.